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arxiv: 0710.0741 · v1 · submitted 2007-10-03 · ✦ hep-lat

B Semileptonic Decays at High Recoil Momentum

classification ✦ hep-lat
keywords decaysfunctionsmomentumrandom-wallrecoilsemileptonicusedcorrelation
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We explore the possibility of studying $B\to\pi l\nu$ semileptonic decays at large recoil momentum. Our methods include the use of a random-wall source for the pion to reduce statistical errors, and different smearing functions are used for the B meson to improve the overlap with the ground state. We observe, in general, a factor of 3-4 improvement in the signal-to-noise ratio in correlation functions if random-wall propagators are used.

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